After Gene Hackman, 95, and his wife Betsy Arakawa, 64, were found dead in their home on Wednesday, Feb. 26, his daughter said the family thinks carbon monoxide poisoning might be to blame. The investigation is ongoing.

The bodies of Gene Hackman and his wife Betsy Arakawa showed no signs of carbon monoxide poisoning, according to an affidavit from a Santa Fe, N.M., detective who was seeking a search warrant for their home.

Gene Hackman's daughter, and some internet sleuths, speculate that the Hollywood legend and his wife died by carbon monoxide poisoning.

The New Mexico Gas Company's "extensive investigation for gas leaks and carbon monoxide at Gene Hackman's home" ruled out possible causes of death.

On social media, many users quickly speculated that carbon monoxide poisoning could be the cause. “Gene Hackman. Rest in peace legend. An all-time great. Mississippi Burning, Superman, Unforgiven, Crimson Tide, Enemy of the State, etc. They're saying no ...

Gene Hackman's daughter has shared that she believes her father and his wife Betsy Arakawa died from carbon monoxide poisoning. Their deaths are still an active investigation, but Elizabeth Jean Hackman told TMZ that she believes the death was due to toxic fumes.

The bodies of Gene Hackman and his wife, Betsy Arakawa, both tested negative for carbon monoxide poisoning. Hackman's pacemaker stopped Feb. 17.

Investigators are not ruling out carbon monoxide poisoning or foul play in the deaths of Gene Hackman and his wife, Betsy Arakawa.

Gene Hackman and his wife, Betsy Arakawa, were dead for at least a day before they were found, Santa Fe County Sheriff Adan Mendoza revealed Thursday. According to TMZ, deputies responded to the actor’s compound after receiving a call from a neighbor asking for a wellness check.